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From Jeff Trawick <>
Subject Re: [PATCH] Threadsafety to mod_ssl dbm session cache
Date Tue, 01 Oct 2002 15:03:51 GMT
Amund Elstad <> writes:

> I am reposting a patch posted by Jeff Trawick which adds mutex protection to
> the retrieve operation. Before I applied this patch, I  experienced the
> following problems with 2.0.40 on win32:
> 	- Child process termination (status 3221225477 in error_log,
> segfault?) - often twice or more every weekday. 
> 	- Infinite loops (I traced one to dbm_close:
> several times a
> week. 
> I applied the patch on September 17th and the server has been running
> perfectly stable since. There has been no significant change in server load,
> nor any other changes in software or hardware.
> The extra mutex protection is in my experience required on win32 (probably
> needed for other threaded MPMs as well), and IMO should be commited to cvs. 

Thanks for the update (and for diagnosing it in the first place!).  I
kept the patch around but wasn't going to commit until I got some
feedback.  I'll commit it today.

Jeff Trawick |
Born in Roswell... married an alien...

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